Answer:
Yellow = x sweets
Blue = x + 15 sweets
Total number of sweets [tex]=\dfrac{10x+75}{3}[/tex]
Step-by-step explanation:
A bag contains sweets of three different colours: orange, blue and yellow. It is given that
Let x be the number of yellow sweets, then x + 15 is the number of blue sweets.
In total, there are x + x + 15 = 2x + 15 blue and yellow sweets.This number of sweets is exactly [tex]\frac{3}{5}[/tex] of all sweets, so there are
[tex]\dfrac{5(2x+15)}{3}=\dfrac{10x+75}{3}[/tex] sweets in total.